Schneider A9F74303| Miniature circuit breaker (MCB), Acti9 iC60N, 3P, 3A, C curve, 6000A (IEC/EN 60898-1), 50kA (IEC/EN 60947-2)

Product Overview: Schneider A9F74303 | Miniature Circuit Breaker (MCB) – Acti9 iC60N – 3P – 3A – C Curve – 6000A

The Schneider Electric A9F74303 is a 3-pole Miniature Circuit Breaker (MCB) from the Acti9 iC60N series. Designed for safe and reliable circuit protection, this MCB features a 3A rated current, C curve tripping characteristics, and a high breaking capacity of 6000A according to IEC/EN 60898-1, and up to 50kA per IEC/EN 60947-2. It is ideal for small loads and sensitive equipment.

Key Features:

• Brand: Schneider Electric

• Series: Acti9 iC60N

• Model: A9F74303

• Device Type: Miniature Circuit Breaker (MCB)

• Poles: 3P (Three Pole)

• Rated Current (In): 3 Amperes

• Tripping Curve: C Curve

• Breaking Capacity:
  – 6 kA (IEC/EN 60898-1)
  – Up to 50 kA (IEC/EN 60947-2)

• Rated Voltage: 400 V AC

• Frequency: 50/60 Hz

Technical Specifications:

• Mounting Type: DIN rail (standard 35 mm)

• Terminal Capacity: 1.5–25 mm² (flexible or rigid cables)

• Degree of Protection: IP20 (with optional terminal covers)

• Operating Temperature Range: -25°C to +70°C

• Electrical Endurance: Up to 10,000 operations

• Mechanical Endurance: Up to 20,000 operations

• Compliance Standards:
  – IEC/EN 60898-1
  – IEC/EN 60947-2

Functional Features:

• C Curve Tripping:
  – Operates at 5–10 times the rated current
  – Suitable for resistive and inductive loads with low inrush currents

• Integrated Safety:
  – Overload protection
  – Short-circuit protection

• Status Indication:
  – Clear ON/OFF/Tripped indicators

• Accessory Compatibility:
  – Supports iOF, iSD, iMN, iMX auxiliaries for advanced control and monitoring

Typical Applications:

• Low-current power distribution circuits

• Lighting panels and final distribution boards

• Commercial and residential protection panels

• OEM machinery protection with low current draw

• Sensitive and mission-critical electrical loads

Advantages of A9F74303:

•  Exceptional reliability from Schneider Electric

•  Compact, modular design

•  Fast tripping response time

•  Wide operating temperature range

•  Easy integration with Acti9 accessories and smart systems

Recommended For:

• Electrical installers and panel builders

• Maintenance and facility engineers

• Industrial and commercial electricians

• Projects requiring high short-circuit withstand in low current circuits